This is a package of four of the newer style 'truckers' style speaker clips with 1/4" hardware and a smaller counter bore for front mounting heavy duty musical instrument speakers such as E120, Commonwealth 12 and Ev speakers with 1/2" rim thickness.  Their made from aluminum like the originals.  They can be hard to find and come with a serrated flange bolt, ( 1/4-20 X 1-1/2" long ) and the 4 prong tee nut for pressing into the back of the speaker cabinet baffle board.  The serrated flange head bolt will stay tight without a lock washer and using a 3/8" nut driver on a screwdriver handle is as tight as it needs to be.   You'll need ONE AUCTION ITEM per speaker.

These are the clips used by many famous players and most famously, Jerry Garcia of the Grateful Dead to front mount speakers to there guitar speaker cabs allowing for fast and convenient speaker change out when they get blown or just to try a different speaker.  There is also a belief the front mounting speakers allows for a wider sound projection angle and thus better sound.  And they just look great!
  
Thanks!